* > div {
  box-sizing: border-box;
}

html, body, #root {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}

#root {
  display: flex;
  align-items: center;
  justify-content: center;

  img {
    width: 160px;
    height: 160px;
  }
}